Lesson-2 Light Microscopy
... Conjugate foci: Object placed at one end of lens will form a clear image on a screen kept at other side of lens. Conjugate foci vary in position. If object is nearer the lens, the image will be formed further away, at a greater magnification and inverted. This “real” image is formed by objective len ...
... Conjugate foci: Object placed at one end of lens will form a clear image on a screen kept at other side of lens. Conjugate foci vary in position. If object is nearer the lens, the image will be formed further away, at a greater magnification and inverted. This “real” image is formed by objective len ...
Interference of light Ordinary illumination Interference fringes
... coherence of the light source S can be disposed of if we use a laser, which has transverse coherence across its beam What happens when the intensity of the light is so low that only single photons pass through the apparatus at a time? The equivalent of Young’s slits work for electrons, neutron ...
... coherence of the light source S can be disposed of if we use a laser, which has transverse coherence across its beam What happens when the intensity of the light is so low that only single photons pass through the apparatus at a time? The equivalent of Young’s slits work for electrons, neutron ...
Youngs Double Slit
... Bring the slit up close to the eye and view the light source. What do you see? The interference pattern can only occur when the light diffracted by the two slits is coherent or in phase with each other. Coherence can be achieved with a laser, however Thomas Young performed this experiment in 1801 an ...
... Bring the slit up close to the eye and view the light source. What do you see? The interference pattern can only occur when the light diffracted by the two slits is coherent or in phase with each other. Coherence can be achieved with a laser, however Thomas Young performed this experiment in 1801 an ...
Paper
... The Letter by Deng et al. [1] presents an analytic theoretical description of matter-wave superradiance [2] which claims to go beyond previous theoretical frameworks. I show here that the theory presented in this Letter is not a description of superradiance per se, but rather an elegant perturbative ...
... The Letter by Deng et al. [1] presents an analytic theoretical description of matter-wave superradiance [2] which claims to go beyond previous theoretical frameworks. I show here that the theory presented in this Letter is not a description of superradiance per se, but rather an elegant perturbative ...
Experiment 3 1 The Michelson Interferometer and the He
... state 2 to state 1. What is the most important is that the phase on the emitted photon will be just the same phase as the incident photon. It will also have the same direction, polarization, ...
... state 2 to state 1. What is the most important is that the phase on the emitted photon will be just the same phase as the incident photon. It will also have the same direction, polarization, ...
optical cavity
... An optical cavity or optical resonator is an arrangement of mirrors that forms a standing wave cavity resonator for light waves. Optical cavities are a major component of lasers, surrounding the gain medium and providing feedback of the laser light 7.1 Resonator types Different resonator types are d ...
... An optical cavity or optical resonator is an arrangement of mirrors that forms a standing wave cavity resonator for light waves. Optical cavities are a major component of lasers, surrounding the gain medium and providing feedback of the laser light 7.1 Resonator types Different resonator types are d ...
Wave Light Test
... 13. When white light is incident upon a prism dispersion occurs. Dispersion of white light is: ...
... 13. When white light is incident upon a prism dispersion occurs. Dispersion of white light is: ...
- Teaching Advanced Physics
... Lasers: You will find it useful to work with lasers in some of the activities described here, so it is a good idea to familiarize yourself with any available lasers, and to ensure that you know how to use them safely. Laser light is particularly suitable for optical work. He-Ne gas lasers used in sc ...
... Lasers: You will find it useful to work with lasers in some of the activities described here, so it is a good idea to familiarize yourself with any available lasers, and to ensure that you know how to use them safely. Laser light is particularly suitable for optical work. He-Ne gas lasers used in sc ...
Near-perfect hologram reconstruction with a spatial light modulator
... Abstract: We present an implementation method for noiseless holographic projection of precalculated light fields with a spatial light modulator. In the reconstructed image, both the spatial amplitude and phase distributions can be programmed independently. This is achieved by diffracting the light f ...
... Abstract: We present an implementation method for noiseless holographic projection of precalculated light fields with a spatial light modulator. In the reconstructed image, both the spatial amplitude and phase distributions can be programmed independently. This is achieved by diffracting the light f ...
A new optical configuration in speckle interferometry for contouring
... fringes when recorded on a photographic plate due to the presence of high dc component in the irradiance distribution w9x. The dc term is conveniently removed and implemented in ESPIrDSPI in the subtraction mode of operation. Ganesan and Sirohi w6x reported that the contour interval obtainable is 5– ...
... fringes when recorded on a photographic plate due to the presence of high dc component in the irradiance distribution w9x. The dc term is conveniently removed and implemented in ESPIrDSPI in the subtraction mode of operation. Ganesan and Sirohi w6x reported that the contour interval obtainable is 5– ...
Reflection of Light
... surfaces. What happens when parallel rays of light strike a rough surface? • Because the surface is not smooth, the light rays are scattered in many directions. This is called diffuse reflection. • The laws of reflection still apply to rough surfaces! ...
... surfaces. What happens when parallel rays of light strike a rough surface? • Because the surface is not smooth, the light rays are scattered in many directions. This is called diffuse reflection. • The laws of reflection still apply to rough surfaces! ...
View PDF - OMICS Group
... of light waves that tends to change with changes in angle of view. The word ‘iris’ comes from the Greek goddess of rainbow. The iridescence of butterfly wings, soap bubbles can be explained using optical interference principles. Vibrating blue color of wings of butterfly can be seen from low flying ...
... of light waves that tends to change with changes in angle of view. The word ‘iris’ comes from the Greek goddess of rainbow. The iridescence of butterfly wings, soap bubbles can be explained using optical interference principles. Vibrating blue color of wings of butterfly can be seen from low flying ...
Measurement of the Wavelength by Diffraction Gratings
... of higher intensities can be produced (Fig11). Moreover the fringes are formed far apart from one another. For this purpose Fraunhofer made the first grating. An ideal diffraction grating consists of a large number of fine equidistant parallel grooves ruled on a plate of glass. The region between tw ...
... of higher intensities can be produced (Fig11). Moreover the fringes are formed far apart from one another. For this purpose Fraunhofer made the first grating. An ideal diffraction grating consists of a large number of fine equidistant parallel grooves ruled on a plate of glass. The region between tw ...
Holography
Holography is the science and practice of making holograms. Typically, a hologram is a photographic recording of a light field, rather than of an image formed by a lens, and it is used to display a fully three-dimensional image of the holographed subject, which is seen without the aid of special glasses or other intermediate optics. The hologram itself is not an image and it is usually unintelligible when viewed under diffuse ambient light. It is an encoding of the light field as an interference pattern of seemingly random variations in the opacity, density, or surface profile of the photographic medium. When suitably lit, the interference pattern diffracts the light into a reproduction of the original light field and the objects that were in it appear to still be there, exhibiting visual depth cues such as parallax and perspective that change realistically with any change in the relative position of the observer.In its pure form, holography requires the use of laser light for illuminating the subject and for viewing the finished hologram. In a side-by-side comparison under optimal conditions, a holographic image is visually indistinguishable from the actual subject, if the hologram and the subject are lit just as they were at the time of recording. A microscopic level of detail throughout the recorded volume of space can be reproduced. In common practice, however, major image quality compromises are made to eliminate the need for laser illumination when viewing the hologram, and sometimes, to the extent possible, also when making it. Holographic portraiture often resorts to a non-holographic intermediate imaging procedure, to avoid the hazardous high-powered pulsed lasers otherwise needed to optically ""freeze"" living subjects as perfectly as the extremely motion-intolerant holographic recording process requires. Holograms can now also be entirely computer-generated and show objects or scenes that never existed.Holography should not be confused with lenticular and other earlier autostereoscopic 3D display technologies, which can produce superficially similar results but are based on conventional lens imaging. Stage illusions such as Pepper's Ghost and other unusual, baffling, or seemingly magical images are also often incorrectly called holograms.